<!--  -->
<template>
  <div>
    <NavBar>
        <div slot="left" class="back" @click="backClick">
            <img src="~assets/img/common/back.svg" alt="">
        </div>
      <div slot="center" class="title">
        <div class="title-item"
         v-for="(item, index) in titles" 
         :key="index"
         :class="{active:index === currentIndex}"
         @click="titleClick(index)"
         >
          {{ item }}
        </div>
      </div>
    </NavBar>
  </div>
</template>

<script>
import NavBar from "components/common/navbar/NavBar";

export default {
  name: "",
  components: {
    NavBar,
  },
  data() {
    return {
      titles: ["商品", "参数", "评论", "推荐"],
      currentIndex: 0,
    };
  },
  methods: {
      titleClick(index){
          this.currentIndex = index
          this.$emit('titleClick',index)
      },
      backClick(){
          this.$router.back()
      }
  }
};
</script>

<style scoped>
.back img{
    margin-left: 10px;
    vertical-align: middle;
}
.title {
  display: flex;
  font-size: 14px;
}
.title-item {
  flex: 1;
}
.active{
    color: var(--color-high-text);
}
</style>